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Replacing M120 Power System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Replacing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Removing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Installing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Replacing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Removing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Installing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Replacing an M120 AC Power Supply Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Replacing an M120 DC Power Supply Cable . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Part 4
Appendixes
Appendix A
Safety and Regulatory Compliance Information for the M120 Router . . . . 187
Definition of Safety Warning Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
General Safety Guidelines for M Series, MX Series, and T Series Routers . . . . . . 189
General Safety Warnings for M Series, MX Series, and T Series Routers . . . . . . . 190
Qualified Personnel Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Restricted Access Area Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Preventing Electrostatic Discharge Damage to an M120 Router . . . . . . . . . . . . . . 192
Fire Safety Requirements for M Series, MX Series, and T Series Routers . . . . . . . 193
General Fire Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Fire Suppression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Fire Suppression Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
M120 Router Installation Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . 194
M120 Chassis Lifting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Installation Safety Warnings for M Series, MX Series, and T Series
Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Installation Instructions Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Rack-Mounting Requirements and Warnings . . . . . . . . . . . . . . . . . . . . . 196
Ramp Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Laser and LED Safety Guidelines and Warnings for the M120 Router . . . . . . . . . 200
General Laser Safety Guidelines for the M120 Router . . . . . . . . . . . . . . . . . 200
M120 Laser and LED Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Class 1 Laser Product Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Class 1 LED Product Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Laser Beam Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Radiation from Open Port Apertures Warning . . . . . . . . . . . . . . . . . . . . 202
Maintenance and Operational Safety Warnings for M Series, MX Series, and T
Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Battery Handling Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Jewelry Removal Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Lightning Activity Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Operating Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Product Disposal Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Copyright © 2010, Juniper Networks, Inc.
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M120 Multiservice Edge Router Hardware Guide
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